• 제목/요약/키워드: recurrences

검색결과 383건 처리시간 0.029초

Radiofrequency catheter ablation of atrioventricular nodal reentry tachycardia in children and adolescents: a single center experience

  • Hyun, Myung Chul
    • Clinical and Experimental Pediatrics
    • /
    • 제60권12호
    • /
    • pp.390-394
    • /
    • 2017
  • Purpose: Atrioventricular nodal reentry tachycardia (AVNRT) is less common in pediatric patients than in adult patients. Thus, data for pediatric AVNRT patients are insufficient. Hence, we aimed to analyze the patient characteristics, treatment, and any recurrences in pediatric AVNRT patients. Methods: We reviewed the records of 50 pediatric AVNRT patients who had undergone radiofrequency catheter ablation (RFCA) between January 1998 and December 2016 at a single regional center. The patients were aged ${\leq}18years$. Results: Among 190 pediatric patients who underwent RFCA for tachyarrhythmia, 50 (26.3%; mean age, $13.4{\pm}2.6years$) were diagnosed as having AVNRT by electrophysiological study. Twenty-five patients (25 of 50, 50%) were male. Twenty patients (20 of 50, 40%) used beta-blockers before RFCA. All patients had no structural heart disease except 1 patient with valvular aortic stenosis and coarctation of the aorta. RFCA was performed using the anatomic approach under fluoroscopic guidance. The most common successfully ablated region was the midseptal region (25 of 50, 50%). Slow pathway (SP) ablation and SP modulation were performed in 43 and 6 patients, respectively. Complication occurred in 1 patient with complete atrioventricular block. During follow-up, 6 patients had recurrence of supraventricular tachycardia, as confirmed by electrocardiography. Among them, 5 underwent successful ablation at the first procedure. In 1 patient, induction failed during the first procedure. Conclusion: RFCA is safe and effective in pediatric AVNRT patients. However, further research is needed for establishing the endpoints of ablation in pediatric AVNRT patients and for identifying risk factors by evaluating data on AVNRT recurrence after RFCA.

Seismic hazard and response spectrum modelling for Malaysia and Singapore

  • Looi, Daniel T.W.;Tsang, H.H.;Hee, M.C.;Lam, Nelson T.K.
    • Earthquakes and Structures
    • /
    • 제15권1호
    • /
    • pp.67-79
    • /
    • 2018
  • Malaysia and Singapore have adopted Eurocode 8 (EC8) for the seismic design of building structures. The authors studied the seismic hazard modelling of the region surrounding Malaysia and Singapore for a long time and have been key contributors to the drafting of the Malaysia National Annex (NA). The purpose of this paper is to explain the principles underlying the derivation of the elastic response spectrum model for Malaysia (Peninsular Malaysia, Sarawak and Sabah). The current EC8 NA for Singapore is primarily intended to address the distant hazards from Sumatra and is not intended to provide coverage for potential local intraplate hazards. Hence, this paper recommends a reconciled elastic response spectrum for Singapore, aiming to achieve a more robust level of safety. The topics covered include the modelling of distant interplate earthquakes generated offshore and local earthquakes in an intraplate tectonic setting, decisions on zoning, modelling of earthquake recurrences, ground motion and response spectrum. Alternative expression for response spectrum on rock, strictly based on the rigid framework of EC8 is discussed.

원발성 질암의 방사선치료 (Radiation Therapy of Primary Carcinoma of the Vagina)

  • 허승재;신경환;안용찬;하성환;박찬일
    • Radiation Oncology Journal
    • /
    • 제13권1호
    • /
    • pp.63-67
    • /
    • 1995
  • A retrospective study was carried out of 20 patients with histologically proven invasive carcinoma of the vagina from 1979 to 1993; 17 cases with curative primary radiotherapy and three cases with postoperative radiotherapy. The five and ten year overall survival rates were $79\%$ and $53\%$, respectively. Survival was strongly correlated with stage. Five year survival rates of stage I, stage II, and stage III, IV were $100\%$, $78\%$, and $0\%$, respectively. Eight patients experienced recurrences: five within the irradiated volume, two distant metastasis, and one combined both local and distant metastasis. There was no significant late complication. From these data, radiation is effective in the management of the vaginal cancer patients and optimum treatment modality and total dose recommendation are made.

  • PDF

Recurrent Pseudomonas aeruginosa Infection in Chronic Lung Diseases: Relapse or Reinfection?

  • Yum, Ho-Kee;Park, I-Nae;Shin, Bo-Mun;Choi, Soo-Jeon
    • Tuberculosis and Respiratory Diseases
    • /
    • 제77권4호
    • /
    • pp.172-177
    • /
    • 2014
  • Background: Pseudomonas aeruginosa infection is particularly associated with progressive and ultimately chronic recurrent respiratory infections in chronic obstructive pulmonary disease, bronchiectasis, chronic destroyed lung disease, and cystic fibrosis. Its treatment is also very complex because of drug resistance and recurrence. Methods: Forty eight cultures from 18 patients with recurrent P. aeruginosa pneumonia from 1998 to 2002 were included in this study. Two or more pairs of sputum cultures were performed during 2 or more different periods of recurrences. The comparison of strains was made according to the phenotypic patterns of antibiotic resistance and chromosomal fingerprinting by pulsed field gel electrophoresis (PFGE) using the genomic DNA of P. aeruginosa from the sputum culture. Results: Phenotypic patterns of antibiotic resistance of P. aeruginosa were not correlated with their prior antibiotic exposition. Fifteen of 18 patients (83.3%) had recurrent P. aeruginosa pneumonia caused by the strains with same PFGE pattern. Conclusion: These data suggest that the most of the recurrent P. aeruginosa infections in chronic lung disease occurred due to the relapse of prior infections. Further investigations should be performed for assessing the molecular mechanisms of the persistent colonization and for determining how to eradicate clonal persistence of P. aeruginosa.

척삭종의 세포학적 소견 -5 예 보고- (Cytologic Features of the Chordoma - Report of five cases -)

  • 김동훈;강신광;공경엽
    • 대한세포병리학회지
    • /
    • 제12권2호
    • /
    • pp.105-110
    • /
    • 2001
  • Chordoma is a rare, clinically and morphologically well characterized tumor, which arises from remnants of the notochord, The majority(60%) occurs in the sacrococcygeal region, with 25% in the clival legion, and 15% in the spine. Although most chordomas do not develop metastasis, the long term prognosis is very poor due to local progressive tumor growth and tendency to recur if incompletely excised. The chordoma has characteristic cytologic features which make a preoperative diagnosis possible. We reviewed the cytologic findings of five patients with chordoma(one oropharynx, two clivus, and two sacrum). The patients were three male and two female, aged from 29 to 77 years(mean 60). Of five chordomas, there were local recurrences in two cases and metastasis of lymph node In one case. Four were FNA smears and one was squash smear taken from intraoperative consultation. All five cases show similar cytologic features. The dominating tumor cells were large with round nuclei and pale-stained vacuolated cytoplasm. The small round uniform cells and short spindle-shaped cells were frequently noted. The cells were surrounded by myxoid or mucoid matrix. The chordoma has characteristic cytologic features which make a preoperative diagnosis possible.

  • PDF

다형성 선종으로 오인된 이하선 상피-근상피암종 3례 (Epithelial-Myoepithelial carcinoma of parotid glands: 3 cases misdiagnosed as pleomorphic adenoma)

  • 이종원;최종중;김명희;김연수
    • 대한두경부종양학회지
    • /
    • 제33권2호
    • /
    • pp.43-47
    • /
    • 2017
  • Epithelial-myoepithelial carcinoma (EMC) is a rare type of low-grade malignant tumor that account for approximately 0.5% to 1% of salivary gland neoplasm and arises most commonly in the parotid gland (80%). We introduce three cases of parotid EMC arose as painless cystic mass in male patients over 70 years old. All patients were diagnosed as benign tumors (pleomorphic adenoma) by image and pathologic study (fine needle aspiration) before surgery, but the final histopathologic results were EMC. All three patients underwent parotidectomy without adjuvant radiotherapy. There were no complications such as facial paralysis. No complications or recurrences were observed during follow-up for 6 to 9 months. Since the reports of EMC are still relatively few, we report our three cases with the clinical and pathological review.

영화 <클레오파트라> 복식과 그 상징성 연구 (A Study on Costume and It's Symbolism of the Movie )

  • 윤덕훈;조규화
    • 패션비즈니스
    • /
    • 제13권1호
    • /
    • pp.17-33
    • /
    • 2009
  • The purpose of this study is to find the character of Cleopatra (69 B.C-30 B.C) by analyzing materials about Cleopatra, and to figure out symbolism and costume presented in movie . Costume of the main character, Cleopatra, compound the type of Egyptian traditional clothes, the change of it, and the trend in the 1960's. And, the symbolic meaning of it is also reinforced by adding ancient Egyptian myth to it. This kind of symbol is usually represented in Cleopatra clothing, especially in weaving pattern, embroidery, and ornament. And color of the clothes not only have their on predominance, but also can have their meaning fade away by mixed with each other, and also the shape has relation with the meaning of color. To sum up, the color and pattern of ancint Egyptian Cleopatra as alive formalize the power that come from coherence with the sun god in the center, which a used to maintain the power of the king. Costume in movie also contained color and pattern as a symbol of religion to symbolize the absolute power of king. These kinds of symbols are reemerging through historical recurrences and exotic interests.

일차성 자연기흉에서 Naruke개흉기를 이용한 최소 액와절개술 (Transaxillary Minithoracotomy with Naruke Thoraco-opener in the Operative Treatments of Primary Spontaneous Pneumothorax)

  • 김병호;허동명
    • Journal of Chest Surgery
    • /
    • 제32권7호
    • /
    • pp.648-652
    • /
    • 1999
  • 배경: 액와절개술을 통한 폐기포절제술은 일차성 자연기흉의 수술적 치료로 많이 사용되어왔다. 대상 및 방법: 액와절개술시 사용되는 개흉기의 종류에 따른 임상성적을 비교하기 위하여 Naruke개흉기(N군)와 Finochieto개흉기(F군)를 이용하였다. 1997년 9월부터 1998년 9월 까지 대구 파티마 병원에서 일차성 자연기 흉에 있어서 액와절개술로 교정한 46례 중 Finochieto개흉기를 이용한 군이 22례 였으며, Naruke개흉기를 이 용한 군이 24례 였다. 결과: 수술시간 및 입원기간, 술 후 입원기간, 술 후 흉관 삽관 기간, 술 후 재발율이나 합병증에는 두 군간에 유의한 차이가 없었다. 결론: 일차성 자연기흉의 수술적 치료에 있어서 Naruke 개흉기 를 이용한 방법이 매우 유용할 것이다.

  • PDF

하지에 발생한 유상피 육종 - 증례 보고 - (Epithelioid Sarcoma in Lower Eextremity - A Case Report -)

  • 전영수;김상환
    • 대한골관절종양학회지
    • /
    • 제14권2호
    • /
    • pp.172-177
    • /
    • 2008
  • 유상피 육종은 젊은 남자 또는 청소년에 호발하는 매우 드문 고등급의 연부조직 육종이며, 수부, 전완부, 하퇴부, 족부에 호발한다. 대부분의 경우 육종은 천천히 자라고, 진피층이나 심부의 연부조직에서 발생하며 원위사지부의 심부 연부조직에 주로 발생한다. 유상피 육종은 국소 재발이나 림프절 전이를 잘하며, 양성 또는 악성의 성질을 가지고 있어 진단에 어려움이 있다. 치료로는 광범위 절제술, 방사선 치료 및 화학요법 등이 시행되어 진다. 저자들은 드문 연부조직 육종인 유상피 육종의 례를 경험하고 이를 보고하는 바이다.

  • PDF

소아에서 발생한 Tolosa-Hunt 증후군 1례 (A case of Tolosa-Hunt syndrome)

  • 김도균;김영옥;우영종
    • Clinical and Experimental Pediatrics
    • /
    • 제49권6호
    • /
    • pp.696-699
    • /
    • 2006
  • 소아에서 드물게 보고되는 토로사-헌트 증후군은 둔하면서 지속적인 안와 주위의 통증과 안구운동 장애 및 해면동 주위의 뇌신경 침범을 특징으로 하는 질환으로 비특이적 염증조직에 기인한 것으로 알려져 있다. 이는 자연 치유도 가능하나 대개 스테로이드가 증상의 회복에 효과적이며 신속한 호전을 유도한다. 토로사-헌트 증후군은 그 예후가 양호하다고 알려져 있으나 일부는 치료 후에 재발하기도 한다. 우리는 토로사-헌트 증후군으로 진단받고 스테로이드 치료 후 특별한 휴우증 없이 회복되었다가 스테로이드를 감량 중 잦은 두통과 안와 주위 통증의 재발을 호소하여 장기간 저용량 스테로이드를 투여 받고 있는 여아 1례를 경험하였기에 이를 보고하는 바이다.